* {
    margin: 0px;
    padding: 0px;
}

.cont {
    width: 446px;
    height: 124px;
    background-color: #003c58;
    overflow: hidden;
}

.navbox {
    width: 60px;
    height: 60px;
    margin: 30px auto;
    background-color: #86c487;
    border-radius: 50px;
    transition: 1s;
}

.nav_icon {
    width: 60px;
    height: 60px;
    background-color: #86c487;
    border-radius: 50%;
    line-height: 65px;
    text-align: center;
    position: absolute;
    left: 193px;
    top: 30px;
    box-shadow: 0px 0px 10px rgb(65, 65, 65);
    transition: 1s;
}

.nav_icon img {
    width: 17px;
    height: 17px;
}

#ra {
    display: none;
}

input[name="ra"]:checked~label>.nav_icon {
    transform: rotate(45deg);
}

input[name="ra"]:checked~.navbox>.icon {
    opacity: 1;
    transition: 1s;
}

input[name="ra"]:checked~.navbox>.a {
    transition-delay: 0.5s;
}
input[name="ra"]:checked~.navbox>.b {
    transition-delay: 1s;
}

input[name="ra"]:checked~.navbox>.c {
    transition-delay: 0.5s;
}
input[name="ra"]:checked~.navbox>.d {
    transition-delay: 1s;
}

input[name="ra"]:checked~.navbox {
    width: 300px;
}

.icon {
    width: 16px;
    height: 16px;
    background-image: url(../images/cd-sprite-2.svg);
    position: absolute;
    top: 50px;
    opacity: 0;
    float: left;
}

.a {
    background-position-x: 64px;
    left: 139px;
}

.b {
    background-position-x: 48px;
    left: 95px;
}

.c {
    background-position-x: 16px;
    left: 275px;
}

.d {
    background-position-x: 32px;
    left: 335px;
}